#include<stdio.h>
#include<conio.h>
main()
{
int i,j=0,k,s=0,a[50];
printf("Enter a number:");
scanf("%d",&k);
for(i=1;i<=k;i++)
{
s=s+i;
a[j]=s;
printf("%d\n",a[j]);
j++;
}
getch();
}
---------------------------------------------
#include<stdio.h>
main()
{
int x,y,z;
int k=100;
while(k<=999)
{
x=k/100;
y=(k-x*100)/10;
z=k-x*100-y*10;
if(k==x*x*x+y*y*y+z*z*z)
printf("%d\n",k);
k++;
}
}
-----------------------------------------------
#include<stdio.h>
main()
{
char c;
int k,data;
data=0;
for(k=0;k<4;k++)
{
while(1)
{
c=getchar();
if(c>='0'&&c<='9')
break;
}
if(k==0)
data+=(c-'0')*1000;
else if(k==1)
data+=(c-'0')*100;
else if(k==2)
data+=(c-'0')*10;
else if(k==3)
data+=(c-'0');
}
printf("Data=%d",data);
}
------------------------------------------------
#include<stdio.h>
#include<conio.h>
#include<string.h>
main()
{
int year,month,dl,week,i;
int m_1=31,m_2=28,m_3=31,m_4=30,m_5=31,m_6=30,m_7=31,m_8=31;
int m_9=30,m_10=31,m_11=30,m_12=31;
agn:printf("enter number of year:");
scanf("%d",&year);
printf("enter number of month:");
scanf("%d",&month);
if(year<=0||month<1||month>12)
{
printf("error!input again\n");
goto agn;
}
m_2=28+(year%4==0)-(year%100==0)+(year%400==0);
year--;
dl=year+year/4-year/100+year/400+1;
for(i=1;i<month;i++)
switch(i)
{
1:dl=dl+m_1;break;
case 2:dl=dl+m_2;break;
case 3:dl=dl+m_3;break;
case 4:dl=dl+m_4;break;
case 5:dl=dl+m_5;break;
case 6:dl=dl+m_6;break;
case 7:dl=dl+m_7;break;
case 8:dl=dl+m_8;break;
case 9:dl=dl+m_9;break;
case 10:dl=dl+m_10;break;
case 11:dl=dl+m_11;break;
case 12:dl=dl+m_12;break;
}
week=dl%7;
printf("%d year %d month :\n",year+1,month);
printf(" SUN MON TUE WEN THU FRI SAT\n");
for(i=0;i<week;i++) printf(" ");
if(month==2)
{
for(i=week;i<week+m_2;i++)
{
printf("%5d",i-week+1);
if(i%7==6) printf("\n");
}
}
if(month==4||month==6||month==9||month==11)
{
for(i=week;i<week+30;i++)
{
printf("%5d",i-week+1);
if(1%7==6)printf("\n");
}
}
if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
{
for(i=week;i<week+31;i++)
{
printf("%5d",i-week+1);
if(i%7==6)printf("\n");
}
}
getchar();
}